John mccaffeey



N0 Model.)

J. MoGAFPREY. L00$E PULLBY FOR SHAFTS.

Patented Deo. 23, 1884.

r w n e W I rrrcn.

JOHN MCCAFFREY, OF LAW BEN CE, MASSACHUSETTS, ASSIGNOB, BY MESN E ASSIGNMENTS, TO HIMSELF AND CHARLES H. SMITH, OF SAME PLACE.

LOOSE PULLEY FOR SHAFTS.

SPECIFICATION forming part of Letters Patent No. 309,554, dated December 23, 1884.

Application filed October 1, 1884. (No model.)

To all whom it may concern:

Be it known that I, JOHN MCCAFFREY, of Lawrence, in the county of Essex, of the Commonwealth of Massachusetts, have invented a new and useful Improvement in Loose Pulleys for Shafts; and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which Figure 1 is a side-view, Fig. 2 a transverse section, and Fig. 3 a longitudinal section, of a loose pulley provided withmy invention, the nature of which is defined in the claim hereinafter presented.

In the said figures the saidinvention is rep resented as integral with the pulley, but in Figs. 4 and 7, which are transverse sections of a loose pulley, the invention is represented as constructed separately from and fixed to the pulley, Figs. 5 and 6 being side views of it.

In accordance with my improvement the loose pulley is provided with an oiling-chamber encompassing the eye of the hub of the pulley and opening therein, and furnished with one or a series of inducts for supplying it, the said chamber, with oil or a lubricating-fluid. Furthermore, there is projected from such chamber or the part containing it a taperingguide and a flange encompassing such guide, the induct or inducts for the passage of the oil into the chamber being between the said guide and flange. IVit-hin the chamber there are one or more radial or other noper-shaped ribs or projections to prevent or hinder the oil from revolving in the cha1nber relatively thereto. Such ribs may be curved in a manner to intercept the oil while the pulley may be in revolution, and force it 40 toward the eye of the pulley and prevent it by centrifugal force from being packed at the circumference of the chamber. I11 the drawings, A denotes the loose pulley, of which a is the hub and b the cylindri- 5 cal eye thercoffor receiving the shaft on which the pulley is to run.

In Figs. 1, 2, and 3 the oiling-chamber is shown at C as formed within the hub or as in tegral therewith, and around and opening directly into the eye I), and provided with a series of lateral inducts, 0, extending into it from a conical oratapering surface or guide, at,

formed on and around the hub in manner as represented. Besides the said guide the oilingchamber is furnished with an annular flange, c, which is concentric with the guide and the series of inducts, or is arranged therewith as represented. WVhen the pulley may be in revolution on the shaft, if oil be poured upon the guide, such oil will be caused by cen- 6o trit'ugal force to pass up the guide and into an annular space between it and the flange, and thence through the induct or inducts into the lubricating-chamber, which is shown as having on each of its inner opposite sides a series of radial ribs or projections, f. The annular flange serves to intercept the oil and direct it into the induct or inducts. Without the flange the oil would be thrown off the hub, or part in which the chamber is formed,without passing into the chamber.

In Fig. 4 the oiling vessel or chamber is shown as made separately from and screwed upon the hub of the pulley and held by a check-screw, g, from revolving on the hub independently thereof.

In Fig. 7 the oiling vessel or chamber is represented as made separate from the hub and in two parts, 8 t, the part 3 being first secured t0 the hub and adjusted into concenso tricity therewith by four tubular screws, 71-, the part 25 being screwed on the part 8, as shown at a.

lVith my invention the loose pulley, while in revolution, can be supplied with oil and 8 need not be stopped for such purpose, it being only necessary to pour the oil upon the tapering guide, which, with the encompassing annular flange, will direct such oil to the inducts of the chamber and cause it to flow 90 through them into the said chamber.

I claim A loose pulley provided with an oilingchamber, furnished on its inner surface with ribs or projections and encompassing its hub- 5 eye and opening therein, such chamber having one or more lateral inducts and a tapering guide, and an annular flange arranged therewith all being substantially as set forth.

JOHN MGCAFFREY.

\Vitnesses:

W. Frsr; GILE, OCTAVIUS T. Hows. 

